What makes Wellfleet Wellfleet? Perhaps it is the Wellfleet Drive-In, where you can watch current movies in the comfort of your car. Maybe it’s the old-time South Wellfleet General Store, which offers locally roasted Beanstock Coffee and gourmet sandwiches. Mabe it’s the clay courts at Oliver’s Tennis on Route 6, where tennis buffs can slow down their game on a hot day…